1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2017 Kyle Evans <kevans@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29#ifndef DEV_SYSCON_H 30#define DEV_SYSCON_H 31 32#include "opt_platform.h" 33 34#include <sys/types.h> 35#include <sys/kobj.h> 36#ifdef FDT 37#include <dev/ofw/ofw_bus.h> 38#endif 39 40struct syscon { 41 KOBJ_FIELDS; 42 43 TAILQ_ENTRY(syscon) syscon_link; /* Global list entry */ 44 45 device_t pdev; /* provider device */ 46#ifdef FDT 47 phandle_t ofw_node; /* OFW node for syscon */ 48#endif 49 void *softc; /* provider softc */ 50}; 51 52/* 53 * Shorthands for constructing method tables. 54 */ 55#define SYSCONMETHOD KOBJMETHOD 56#define SYSCONMETHOD_END KOBJMETHOD_END 57#define syscon_method_t kobj_method_t 58#define syscon_class_t kobj_class_t 59DECLARE_CLASS(syscon_class); 60 61void *syscon_get_softc(struct syscon *syscon); 62 63/* 64 * Provider interface 65 */ 66struct syscon *syscon_create(device_t pdev, syscon_class_t syscon_class); 67struct syscon *syscon_register(struct syscon *syscon); 68int syscon_unregister(struct syscon *syscon); 69 70#ifdef FDT 71struct syscon *syscon_create_ofw_node(device_t pdev, 72 syscon_class_t syscon_class, phandle_t node); 73phandle_t syscon_get_ofw_node(struct syscon *syscon); 74int syscon_get_by_ofw_property(device_t consumer, phandle_t node, char *name, 75 struct syscon **syscon); 76#endif 77 78#endif /* DEV_SYSCON_H */ 79